## Wikipedia - Reazione elementare (it) Wikipedia - Étape réactionnelle (fr) Wikipedia - 反応段階 (ja) reaction step

https://doi.org/10.1351/goldbook.R05178
An @[email protected], constituting one of the stages of a @[email protected] in which a @[email protected] (or, for the first step, the reactants) is converted into the next @[email protected] (or, for the last step, the products) in the @[email protected] of intermediates between reactants and products.